BIOD 152 AP2 LAB 4 COMPREHENSIVE
EXAMINATION TEST 2026 QUESTIONS WITH
ANSWERS 100% CORRECT
◉ Which of the following should you do when obtaining or returning
a microscope? Mark all that apply. (lab 3) Answer: - walk slowly and
carefully
- hold it with both hands
- keep it upright
◉ Indicate which of the following should be done to properly clean
and store your microscope.
Select all that apply. (lab 3) Answer: - stage lowered
- lowest power objective in place
- lenses cleaned with lens paper
- light dimmer on lowest setting
◉ When you want to view a specimen with a compound light
microscope using the 40x objective lens you should (lab 3) Answer:
always start with the 4x objective to center your specimen and work
your way up,
focusing each objective and moving on.
,◉ Onion and potato are both underground structures for plants.
What is their function? (lab 3) Answer: to store energy for later use
◉ Toothpicks are clearly biodegradable.
Why were you not supposed to dispose of them in the trash can or
recycling bin during Lab 3? Answer: they were used to obtain human
cheek cells and as human body parts are categorized as
biohazardous,
must be disposed of under specific protocols
◉ When were you required to wear goggles during Lab 3? Answer: -
when making cheek cell slides
- while applying methylene blue to a slide
-while applying iodine to a slide
-while washing your specimen slides
◉ The surface area-to-volume ratio of a cell (lab 3) Answer: look at
graph on post lab 3 quiz # 10
◉ cell membrane (lab 4) Answer: -functions as a barrier b/w the
inside & outside of the cell
-controls the movement of substances into and out of cell
, ◉ lipids (lab 4) Answer: organic compounds, such as fats and oils,
that are made of carbon and hydrogen atoms linked together by
covalent bonds
◉ lipids are mostly (lab 4) Answer: nonpolar and hydrophobic
(water-fearing)
◉ phospholipid (lab 4) Answer: -in cell membranes
- glycerol molecule with phosphate group at one end and two fatty
acids on the other end
◉ phospholipid molecule (lab 4) Answer: -hydrophilic head (polar)
-hydrophobic tail (non polar)
◉ phospholipid bilayer (lab 4) Answer: Plasma membrane layers
composed of phospholipid molecules arranged with polar heads
facing the outside (towards water on each side of layers) and
nonpolar tails facing the inside (b/w layers)
◉ Permeability of Plasma Membrane (lab 4) Answer: -selectively
permeable: only small, nonpolar, and soluble molecules can freely
cross the membrane
ex: oxygen, carbon dioxide, and some alcohol
EXAMINATION TEST 2026 QUESTIONS WITH
ANSWERS 100% CORRECT
◉ Which of the following should you do when obtaining or returning
a microscope? Mark all that apply. (lab 3) Answer: - walk slowly and
carefully
- hold it with both hands
- keep it upright
◉ Indicate which of the following should be done to properly clean
and store your microscope.
Select all that apply. (lab 3) Answer: - stage lowered
- lowest power objective in place
- lenses cleaned with lens paper
- light dimmer on lowest setting
◉ When you want to view a specimen with a compound light
microscope using the 40x objective lens you should (lab 3) Answer:
always start with the 4x objective to center your specimen and work
your way up,
focusing each objective and moving on.
,◉ Onion and potato are both underground structures for plants.
What is their function? (lab 3) Answer: to store energy for later use
◉ Toothpicks are clearly biodegradable.
Why were you not supposed to dispose of them in the trash can or
recycling bin during Lab 3? Answer: they were used to obtain human
cheek cells and as human body parts are categorized as
biohazardous,
must be disposed of under specific protocols
◉ When were you required to wear goggles during Lab 3? Answer: -
when making cheek cell slides
- while applying methylene blue to a slide
-while applying iodine to a slide
-while washing your specimen slides
◉ The surface area-to-volume ratio of a cell (lab 3) Answer: look at
graph on post lab 3 quiz # 10
◉ cell membrane (lab 4) Answer: -functions as a barrier b/w the
inside & outside of the cell
-controls the movement of substances into and out of cell
, ◉ lipids (lab 4) Answer: organic compounds, such as fats and oils,
that are made of carbon and hydrogen atoms linked together by
covalent bonds
◉ lipids are mostly (lab 4) Answer: nonpolar and hydrophobic
(water-fearing)
◉ phospholipid (lab 4) Answer: -in cell membranes
- glycerol molecule with phosphate group at one end and two fatty
acids on the other end
◉ phospholipid molecule (lab 4) Answer: -hydrophilic head (polar)
-hydrophobic tail (non polar)
◉ phospholipid bilayer (lab 4) Answer: Plasma membrane layers
composed of phospholipid molecules arranged with polar heads
facing the outside (towards water on each side of layers) and
nonpolar tails facing the inside (b/w layers)
◉ Permeability of Plasma Membrane (lab 4) Answer: -selectively
permeable: only small, nonpolar, and soluble molecules can freely
cross the membrane
ex: oxygen, carbon dioxide, and some alcohol
